How To Use

Apply once or twice daily after cleansing, toning and exfoliating. Follow with your serum and other targeted products. At night, finish with your moisturizer; during the day, finish with a moisturizer with SPF 30 or greater. Can be applied under the eye area, avoiding the eye itself. Dispense 2-3 drops into the palm of your hand and then apply to your face. Add a couple more drops if you will also be applying to your neck and chest. You can apply this directly to the face or mix it into your serum or moisturizer.

Reviews

Customer Reviews

This product is by far my favourite PC product. I did not find that the results were evident instantaneously but consistent use twice a day, mixed in with an antioxidant serum, or patted on the face alone has proven to give beautiful results. For me it has been the most effective for over all skin texture, brightness and improvement in pigmentation. I have a more youthful appearance and definite glow since I introduced this product consistently. My skin does not tolerate daily exfoliating and responds better to weekly 10% AHA and occasional 5%, also I can only use RetinA once weekly, the results of which are great but the biggest impact and most tolerated product has definitely been the C-15 booster. I highly recommend this product and suggest that if you don't notice improvements immediately, stick with it and before long you will reap the benefits. (Posted on 2/7/2018)

I tried other C serums that left my skin irritated. This one is perfect and has never once left my skin red or itchy. I use it twice a day--in the morning I mis it with my Skin Balancing Super Antioxidant Serum, and in the evening I mix it with my Retin-A cream. Changes do not happen overnight, but they do happen. My skin is more even and looks brighter and younger. I used to be a product junkie but I have been a loyal Paula's Choice customer for years, and my young-looking skin shows for it! (Posted on 2/7/2018)

I have sensitive skin with a mild case of rosacea. It's hard to find anti-aging products that do not irritate my skin. I love this stuff-- I use two drops mixed into my skin recovery moisturizer every morning and night and my skin is looking calm and even toned. I love that I'm adding a protective layer of skin care in addition to my resist sunscreen. It does not make my skin feel oily, just nicely moisturized. I also love that I am able to adjust the amount I'm using and can spot treat if I want to (I have a darker spots on my forehead). For reference I'm currently using the PC Calm BHA 1% lotion, Resist 1% retinol and this product as my treatment add-ons. I rotate the BHA and the retinol every other night. If my skin is feeling dry or sensitive I just use the skin recovery moisturizer. I don't notice a scent at all. I noticed other reviews about the color of the product, my product is completely clear. (Posted on 2/7/2018)

I have had my eye on this product for quite some time and finally justified buying it because I just wasn't happy with my skins appearance. I felt that I always had to wear makeup because my skin gets oily and red. Plus I have been experiencing random breakouts. But after using this product for a couple weeks my skin is softer, less oily throughout the day so my make up last longer, and my breakouts have vanished. I use this product in conjunction with three other products from the resist line. In love. (Posted on 2/7/2018)

This is the first high-percentage vitamin c serum I've used, but I'll definitely be comparing any others I try to this one. The liquid texture mixes into other serums, moisturizers, and oils so well. I notice that my skin looks much less dull when I use this daily. It smells like hot dogs, but that's to be expected with these ingredients. (Posted on 2/7/2018)

I'm hooked on this stuff. It has made a huge difference in my sun damaged, aging skin. My skin is also combination, sensitive, with large pores, rosacea, and I have melasma. Very challenging. This product brightens and smooths my skin without freaking out my rosacea or causing breakouts. I use a few drops nightly before my Clinical 1% Retinol. Amazing results. (Posted on 2/7/2018)

I am a skeptic and have little faith in cosmetic "fixes" for skin issues attributable to natural aging. An age spot I have next to my eye has been increasingly annoying for a couple of years. I am AMAZED at how it has been diminished since using this product twice a day for 4-6 weeks. I have read about the problems others have had, but this product works for me. (Posted on 2/7/2018)

I have been using this product for a short time, but I am familiar with vitamin c serums. In order to extend the life as much as possible, I store in it the fridge. This preserves vitamin c and also feels really good applying to the skin. I have used other brands with similar ingredients and when stored in fridge they lasted 6 months, or until I used it all. I like the PC serum better due to other benefitical ingredients. And it seems to smell better, feel smoother and appplies better. I like it a lot and starting to see some results after a few weeks. (Posted on 2/7/2018)

I know a lot of people have said that this product oxidizes too quickly, but I have been using my bottle for five months, DAILY, and the liquid is still clear. Also, for those who have complained, have you done a cost comparison between PC and other prestige cosmetic brands of vitamin C? Even IF your PC bottle oxidizes at a 2-3 month mark, you are STILL paying a better price in comparison. I personally love this product and will keep purchasing it on a regular basis! (Posted on 2/7/2018)

I have used vitamin C for years from Skinceuticals but switched to PC because of the HUGE price difference. I get the same results of smoother skin and smaller pores for a fraction of the price. Yes the smell is not great, but the benefits outweigh this for me. Vitamin C and retinol are absolute musts for me since they were recommended by a dermatologist in 2008. I wouldn't be without PC products. I keep my vitamin C inside the cabinet in the bathroom to protect it from oxidizing and it seems to work. (Posted on 2/7/2018)

This is a great product, and in such a good price! I used it everyday for a week, and I felt the change: my skin was SUPER soft, I couldn't believe it. Used it in combination with the Radiance renewal mask, and I woke up a different person! Unfortunately I am not consistent in putting it every night. Now, in very hot and humid weather, using it during the day was a challenge for me...I have a bit of oily/combination skin..and I sweat in the face a lot..but never had a pimple with this product! I totally recommend it for anybody in the 50s. My question is: can I still use it once it turns dark-orange? (Posted on 2/7/2018)

I am using a lot of Paula's other great products and didn't think I really needed this. I was wrong! I started using it a few days ago and have already noticed that it is fading some issues on my face. I have been putting a couple of drops in either my serums or in my moisturizer both night and day. I would definitely recommend this product and glad I decided to finally try it. (Posted on 2/7/2018)

I absolutely LOVE this product! Thanks to Paula's Choice, I have gotten my acne under control, but have been left with red/brown hyperpigmentation from acne, and the Vitamin C Booster has been the most effective thing to fade these marks, as well as new marks from the occasional acne spots I get now. The price may seem expensive, but one bottle lasted me for almost one whole year. I mix two drops into my moisturizer each morning, and see results quickly. I will definitely keep repurchasing this! (Posted on 2/7/2018)

This product has impressive capability in very small amounts to improve tone and texture of skin. If you have a blemish or irregularity of any sort it will help to minimize. Can be used in combination with many Paula's products for great results. (Posted on 2/7/2018)